/* CoralCube | Massively Multiplayer Online Role-Playing Game(MMORPG) Emulator.
|* 
|* Copyright (C) 2005-2010 MaNGOS <http://getmangos.com/>
|*               2008-2010 TrinityCore <http://www.trinitycore.org/>
|*               2008-2010 CoralCube <http://www.CoralCube.com/>
|*
|* This program is free software. You can redistribute it and/or modify it under the terms of 
|* the GNU General Public License as published by the Free Software Foundation, either 
|* version 2 of the License.
|*
|* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY, 
|* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
|* See the GNU General Public License for more details.
|*
|* You should have received a copy of the GNU General Public License along with this program. 
|* If not, see <http://www.gnu.org/licenses/>.
|*/

#ifndef _AUTH_BIGNUMBER_H
#define _AUTH_BIGNUMBER_H

#include "Common.h"

struct bignum_st;

class BigNumber
{
public:
    BigNumber();
    BigNumber(const BigNumber &bn);
    BigNumber(uint32);
    ~BigNumber();

    void SetDword(uint32);
    void SetQword(uint64);
    void SetBinary(const uint8 *bytes, int len);
    void SetHexStr(const char *str);

    void SetRand(int numbits);

    BigNumber operator=(const BigNumber &bn);

    BigNumber operator+=(const BigNumber &bn);
    BigNumber operator+(const BigNumber &bn)
    {
        BigNumber t(*this);
        return t += bn;
    }
    BigNumber operator-=(const BigNumber &bn);
    BigNumber operator-(const BigNumber &bn)
    {
        BigNumber t(*this);
        return t -= bn;
    }
    BigNumber operator*=(const BigNumber &bn);
    BigNumber operator*(const BigNumber &bn)
    {
        BigNumber t(*this);
        return t *= bn;
    }
    BigNumber operator/=(const BigNumber &bn);
    BigNumber operator/(const BigNumber &bn)
    {
        BigNumber t(*this);
        return t /= bn;
    }
    BigNumber operator%=(const BigNumber &bn);
    BigNumber operator%(const BigNumber &bn)
    {
        BigNumber t(*this);
        return t %= bn;
    }

    bool isZero() const;

    BigNumber ModExp(const BigNumber &bn1, const BigNumber &bn2);
    BigNumber Exp(const BigNumber &);

    int GetNumBytes(void);

    struct bignum_st *BN() { return _bn; }

    uint32 AsDword();
    uint8* AsByteArray(int minSize = 0, bool reverse = true);

    const char *AsHexStr();
    const char *AsDecStr();

private:
    struct bignum_st *_bn;
    uint8 *_array;
};
#endif
